For each of the following research ideas: a. Identify the Independent Variable (IV) b. Identify the Dependent Variable (DV) c. Write a null hypothesis d. Write an alternative/research hypothesis 1. A researcher would like to test whether stress plays a role on a person’s ability to identify faces. 2.Your school would like to find out if students who eat more carbohydrates for breakfast do better at school. 3. A medical lab would like to test if caffeine can increase one’s sense of smell. 4. An industrial psychologist would like to see if one’s ability to solve problems changes with the time of day.